Processer or CPU

CPU:   What is CPU?
                     Ans: CPU is nothing but it is commonly called as  processer..
                              It is the real brain of the computer and where most of the
                              calculation take place..
There are two processer(or CPU) companies, They are,
1.Intel
2.AMD

In these two company processer there are many models and types..
E.g.. Intel Core i7 is the latest type processer at present..